219-459: Throughout baseball 's history, the rules have frequently changed as the game continues to evolve. A few typical rules most professional leagues have in common are that four balls are a base on balls , three strikes are a strikeout , and three outs end a half- inning . Baseball evolved out of bat-and-ball games in the mid-19th century, and its modern rules are based mainly on those first published in 1848 . Most rule sets are generally based on
438-407: A run . In an enclosed field, a fair ball hit over the fence on the fly is an automatic home run , which entitles the batter and all runners to touch every base and score. On a field with foul poles, a ball that hits a pole is also a home run. A home run hit with all bases occupied (' bases loaded ') is called a grand slam . The squad in the field is the defensive team; they attempt to prevent
657-412: A fastball , which is the ball thrown at high speed; a curveball , which is made to curve by rotation imparted by the pitcher; a change-up , which seeks to mimic the delivery of a fastball, but arrives at significantly lower velocity; a splitfinger fastball , which attempts to mimic the delivery of a fastball, but has slight topspin rotation allowing the baseball to sink as it approaches the batter due to
876-561: A pinch-runner . To that end, the goal of each batter is to enable baserunners to score or to become a baserunner himself. The batter attempts to hit the ball into fair territory —between the baselines—in such a way that the defending players cannot get them or the baserunners out. In general, the pitcher attempts to prevent this by pitching the ball in such a way that the batter cannot hit it cleanly or, ideally, at all. A baserunner who has successfully touched home plate without being retired (called out) after touching all previous bases scores
1095-425: A sacrifice fly . In order to increase the chance of advancing a batter to first base via a walk, the manager will sometimes signal a batter who is ahead in the count (i.e., has more balls than strikes) to take , or not swing at, the next pitch. The batter's potential reward of reaching base (via a walk) exceeds the disadvantage if the next pitch is a strike. The evolution of baseball from older bat-and-ball games
1314-571: A salary cap and a reserve clause that bound players to their teams indefinitely. The NL suffered many defections of star players to the Players' League, but the P.L. collapsed after one season. The Brooklyn, Chicago, Pittsburgh, and New York franchises of the NL absorbed their Players' League counterparts. The labor strike of 1890 hastened the downfall of the American Association. After the 1891 season,
1533-405: A third baseman to the right of third base. The basic outfield positions are left fielder , center fielder , and right fielder . With the exception of the catcher, all fielders are required to be in fair territory when the pitch is delivered. A neutral umpire sets up behind the catcher. Other umpires will be distributed around the field as well. Play starts with a member of the batting team,
1752-458: A " World Series " to decide the overall professional baseball championship. National League teams have won 51 of the 119 World Series championships contested from 1903 to 2023. For decades, Major League baseball clubs only played teams from their own league during the regular season and most of the playoffs, with only their champions facing off in the World Series. This separation gradually caused
1971-447: A ball that results in the team's third out, even if it is recorded against a teammate. On rare occasions, a batter may be at the plate when, without the batter's hitting the ball, a third out is recorded against a teammate—for instance, a runner getting caught stealing (tagged out attempting to steal a base). A batter with this sort of incomplete plate appearance starts off the team's next turn batting; any balls or strikes recorded against
2190-402: A base that a teammate is forced to advance to. If a ball hit into play rolls foul before passing through the infield, it becomes dead and any runners must return to the base they occupied when the play began. If the ball is hit in the air and caught before it lands, the batter has flied out and any runners on base may attempt to advance only if they tag up (contact the base they occupied when
2409-415: A baseball team, as pitching is the key for the defensive team to retire batters and to prevent runners from getting on base. A full game usually involves over one hundred pitches thrown by each team. However, most pitchers begin to tire before they reach this point. In previous eras, pitchers would often throw up to four complete games (all nine innings) in a week. With new advances in medical research and thus
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#17328491332742628-463: A better understanding of how the human body functions and tires out, starting pitchers tend more often to throw fractions of a game (typically six or seven innings, depending on their performance) about every five days (though a few complete games do still occur each year). A single game often requires multiple pitchers, including the starting pitcher and relief pitcher (s). Pitchers are substituted for one another like any other player (see above), and
2847-690: A condition of the sale of the Astros to Jim Crane in November 2011, the team agreed to move to the American League effective with the 2013 season. In 2023, National League teams played 46 regular season interleague games against all 15 American League teams, 23 at home and 23 on the road. As of the end of the 2024 season, the Dodgers have won the most NL pennants, with 25. Representing the National League against
3066-414: A downward trajectory. Several different names are used to describe fly balls, depending on their trajectory. A ball hit high in the air and seemingly almost straight up is called a "pop-up". A ball hit forcefully in a fast-moving and seemingly almost straight-line trajectory is called a line drive . A "shallow" fly ball, hit with just enough force to possibly land between the infielders and the outfielders,
3285-422: A fielder or a runner, then said ball is considered fair. Once the batter and any existing runners have all stopped at a base or been put out, the ball is returned to the pitcher, and the next batter comes to the plate. After the opposing team bats in its own order and three more outs are recorded, the first team's batting order will continue again from where it left off. When a runner reaches home plate, he scores
3504-511: A following in much of the world was a factor, more important was MLB's reluctance to allow its players to participate during the major league season. MLB initiated the World Baseball Classic , scheduled to precede its season, partly as a replacement, high-profile international tournament. The inaugural Classic , held in March 2006, was the first tournament involving national teams to feature
3723-416: A football or soccer field does not affect play the way foul territory in baseball does, so variations in that regard are largely insignificant. These physical variations create a distinctive set of playing conditions at each ballpark. Other local factors, such as altitude and climate, can also significantly affect play. A given stadium may acquire a reputation as a pitcher's park or a hitter's park, if one or
3942-435: A game, involves an individual, one-on-one contest: "the pitcher and the batter in a battle of wits". Pitcher, batter, and fielder all act essentially independent of each other. While coaching staffs can signal pitcher or batter to pursue certain tactics, the execution of the play itself is a series of solitary acts. If the batter hits a line drive, the outfielder is solely responsible for deciding to try to catch it or play it on
4161-506: A handful of teams joining the NL once their leagues folded. The American League declared itself a second major league in 1901, and the AL and NL engaged in a "baseball war" during 1901 and 1902 before agreeing to a "peace pact" that recognized each other as legitimate "major leagues". As part of this agreement, the leagues agreed to respect player contracts, establish rules about relationships with minor league clubs, and allow their champions to meet in
4380-479: A home run at another. A team that plays in a park with a relatively short right field, such as the New York Yankees , will tend to stock its roster with left-handed pull hitters , who can best exploit it. On the individual level, a player who spends most of his career with a team that plays in a hitter's park will gain an advantage in batting statistics over time—even more so if his talents are especially suited to
4599-495: A lead , the pitcher may attempt a pickoff , a quick throw to a fielder covering the base to keep the runner's lead in check or, optimally, effect a tag out. Pickoff attempts, however, are subject to rules that severely restrict the pitcher's movements before and during the pickoff attempt. Violation of any one of these rules could result in the umpire calling a balk against the pitcher, which permits any runners on base to advance one base with impunity. If an attempted stolen base
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#17328491332744818-434: A more "traditional" or "pure" league, the National League did not adopt the designated hitter rule until the shortened 2020 season . Only the American League previously adopted the rule in 1973. In theory, this meant that the role of the manager was greater in the National League than in the American League, because the NL manager must take offense into account when making pitching substitutions and vice versa. However, this
5037-478: A new rule officially banning the spitball and other pitches that depended on the ball being treated or roughed-up with foreign substances, resulted in a ball that traveled farther when hit. The rise of the legendary player Babe Ruth , the first great power hitter of the new era, helped permanently alter the nature of the game. In the late 1920s and early 1930s, St. Louis Cardinals general manager Branch Rickey invested in several minor league clubs and developed
5256-497: A normal overhand. True underhanded pitching is permitted in Major League Baseball. However, it is difficult to generate enough velocity and movement with the underhand motion. Among modern Major League pitchers, Chad Bradford had the closest to an underhand delivery, with his knuckles sometimes scraping the ground. However, he is still usually considered a "submarine" pitcher. One example of variation in professional leagues
5475-409: A noted exception to this rule is that a ball bunted foul with two strikes is a strikeout.) If a pitch is batted and a member of the defensive team is able to catch it, before the ball strikes the ground, the batter is declared out. In the event that a bat deflects the ball sharply and directly back toward the catcher's box, it is a foul tip . If a ball ruled as a foul tip is caught, with two strikes in
5694-660: A number of competitions between clubs from different countries. Other competitions between national teams, such as the Baseball World Cup and the Olympic baseball tournament , were administered by the International Baseball Federation (IBAF) from its formation in 1938 until its 2013 merger with the International Softball Federation to create the current joint governing body for both sports,
5913-408: A park with little space between the foul lines and the stands, but a foulout in a park with more expansive foul ground. A fence in foul territory that is close to the outfield line will tend to direct balls that strike it back toward the fielders, while one that is farther away may actually prompt more collisions, as outfielders run full speed to field balls deep in the corner. These variations can make
6132-539: A permanent fixture of the post-season. Regular-season interleague play was introduced in 1997 and the second-highest attendance mark for a full season was set. In 2000, the National and American Leagues were dissolved as legal entities. While their identities were maintained for scheduling purposes (and the designated hitter distinction), the regulations and other functions—such as player discipline and umpire supervision—they had administered separately were consolidated under
6351-427: A pitcher's park when the strong winds off Lake Michigan are blowing in, it becomes more of a hitter's park when they are blowing out. The absence of a standardized field affects not only how particular games play out, but the nature of team rosters and players' statistical records. For example, hitting a fly ball 330 feet (100 m) into right field might result in an easy catch on the warning track at one park, and
6570-431: A pitcher, major league teams generally have certain players designated as emergency relief pitchers, to avoid the embarrassment of using a less skillful player. In baseball's early years, squads were smaller, and relief pitchers were relatively uncommon, with the starter normally remaining for the entire game unless he was either thoroughly ineffective or became injured. Today, with a much greater emphasis on pitch count, over
6789-411: A player has been removed for a substitute, that player may not reenter the game. Children's games often have more lenient rules, such as Little League rules, which allow players to be substituted back into the same game. If the designated hitter (DH) rule is in effect, each team has a tenth player whose sole responsibility is to bat (and run). The DH takes the place of another player—almost invariably
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7008-601: A postseason championship—the World Series . Major League Baseball narrowly averted radical reorganization in November 1920. Dissatisfied with American League President and National Baseball Commission head Ban Johnson , NL owners dissolved the league on November 8 during heated talks on MLB reorganization in the wake of the Black Sox Scandal . Simultaneously, three AL teams also hostile to Johnson ( Boston Red Sox , Chicago White Sox , and New York Yankees ) withdrew from
7227-460: A run and is no longer a base runner. He must leave the playing area until his spot in the order comes up again. A runner may circle the bases only once per plate appearance and thus can score no more than a single run. In the American, Pacific, and both Cuban leagues, there is a tenth player, a designated hitter, who bats for the pitcher. Each plate appearance consists of a series of pitches, in which
7446-406: A runner is held to a base, he may attempt to advance at any time, but is not required to do so unless the batter or another runner displaces him (called a force play). A batter always drops his bat when running the bases; otherwise, the bat would slow him down and could give rise to a call of interference if it were to contact the ball or a fielder. However, if a batter hits the ball, and the batter or
7665-441: A significant effect on how ground balls behave and are fielded as well as on baserunning. Similarly, the presence of a roof (seven major league teams play in stadiums with permanent or retractable roofs) can greatly affect how fly balls are played. While football and soccer players deal with similar variations of field surface and stadium covering, the size and shape of their fields are much more standardized. The area out-of-bounds on
7884-629: A significant number of MLB participants. The Baseball World Cup was discontinued after its 2011 edition in favor of an expanded World Baseball Classic. Baseball has certain attributes that set it apart from the other popular team sports in the countries where it has a following. All of these sports use a clock, play is less individual, and the variation between playing fields is not as substantial or important. The comparison between cricket and baseball demonstrates that many of baseball's distinctive elements are shared in various ways with its cousin sports. In clock-limited sports, games often end with
8103-409: A skillful contact hitter , the runner takes off with the pitch, drawing the shortstop or second baseman over to second base, creating a gap in the infield for the batter to poke the ball through. The sacrifice bunt , calls for the batter to focus on making soft contact with the ball, so that it rolls a short distance into the infield, allowing the runner to advance into scoring position as the batter
8322-422: A team that holds the lead killing the clock rather than competing aggressively against the opposing team. In contrast, baseball has no clock, thus a team cannot win without getting the last batter out and rallies are not constrained by time. At almost any turn in any baseball game, the most advantageous strategy is some form of aggressive strategy. Whereas, in the case of multi-day Test and first-class cricket ,
8541-413: Is a home run : the batter and any runners on base may all freely circle the bases, each scoring a run. This is the most desirable result for the batter. The ultimate and most desirable result possible for a batter would be to hit a home run while all three bases are occupied or "loaded", thus scoring four runs on a single hit. This is called a grand slam . A player who reaches base due to a fielding mistake
8760-402: Is anticipated, the catcher may call for a pitchout , a ball thrown deliberately off the plate, allowing the catcher to catch it while standing and throw quickly to a base. Facing a batter with a strong tendency to hit to one side of the field, the fielding team may employ a shift , with most or all of the fielders moving to the left or right of their usual positions. With a runner on third base,
8979-441: Is awarded a base on balls or walk, a free advance to first base. (A batter may also freely advance to first base if the batter's body or uniform is struck by a pitch outside the strike zone, provided the batter does not swing and attempts to avoid being hit.) Crucial to determining balls and strikes is the umpire's judgment as to whether a pitch has passed through the strike zone , a conceptual area above home plate extending from
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9198-414: Is called. While the team at bat is trying to score runs, the team in the field is attempting to record outs. In addition to the strikeout and flyout, common ways a member of the batting team may be put out include the ground out , force out , and tag out . These occur either when a runner is forced to advance to a base, and a fielder with possession of the ball reaches that base before the runner does, or
9417-408: Is composed of the pitcher , who stands on the rubber of the mound, which is also known as the pitching plate, and the catcher , who squats behind home plate. These are the two fielders who always deal directly with the batter on every pitch, hence the term "battery", coined by Henry Chadwick and later reinforced by the implied comparison to artillery fire. The pitcher's main role is to pitch
9636-678: Is determined by playoffs that culminate in the World Series . The top level of play is similarly split in Japan between the Central and Pacific Leagues and in Cuba between the West League and East League . The World Baseball Classic , organized by the World Baseball Softball Confederation , is the major international competition of the sport and attracts the top national teams from around
9855-558: Is difficult to trace with precision. Consensus once held that today's baseball is a North American development from the older game rounders , popular among children in Great Britain and Ireland . American baseball historian David Block suggests that the game originated in England ; recently uncovered historical evidence supports this position. Block argues that rounders and early baseball were actually regional variants of each other, and that
10074-410: Is indicative of a high-scoring inning. A complete inning consists of each opposing side having a turn (three outs) on offense. The goal of the team at bat is to score more runs than the opposition; a player may do so by batting, then becoming a baserunner , touching all the bases in order (via one or more plays), and finally touching home plate. A player may also become a baserunner by being inserted as
10293-422: Is not credited with a hit—instead, the responsible fielder is charged with an error . Any runners already on base may attempt to advance on batted balls that land, or contact the ground, in fair territory, before or after the ball lands. A runner on first base must attempt to advance if a ball lands in play, as only one runner may occupy a base at any given time; the same applies for other runners if they are on
10512-475: Is often called a "blooper". A "deep" fly ball is hit with enough force to approach and possibly clear the outfield fence. When a ball is hit outside the foul lines, it is a foul ball , requiring the batter and all runners to return to their respective bases, whether it is caught or not. Additionally, if a ground ball or a bunted ball lands in foul territory and the ball rolls back into bounds before reaching either first or third bases without being touched by either
10731-453: Is put out. A successful hit occurs when the batter reaches a base: reaching only first base is a single ; reaching second base, a double ; third base, a triple ; and a hit that allows the batter to touch all bases in order on the same play is a home run —whether the ball is hit over the fence does not matter (if the ball is not hit over the fence and the batter touches all bases, it is usually referred to as an "inside-the-park home run"). Once
10950-427: Is the first baseman's job to field any ball thrown toward him cleanly. Older players who can no longer fulfill the demands of their original positions also often become first basemen. The second baseman covers the area to the first-base side of second base and provides backup for the first baseman in bunt situations. He also is a cut-off for the outfield . The cut-off provides an intermediary between an outfielder and
11169-420: Is the most demanding defensively, so a good shortstop doesn't need to necessarily be a skilled batter, though this has changed in modern times. The third baseman's primary requirement is a strong throwing arm, in order to make the long throw across the infield to the first baseman. Quick reaction time is also important for third basemen, as they tend to see more sharply-hit balls than do the other infielders, thus
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#173284913327411388-492: Is the pitching rubber, a rubber slab positioned 60 feet 6 inches (18.44 m) from home plate. The pitcher must have one foot on the rubber at the start of every pitch to a batter, but the pitcher may leave the mound area once the ball is released. The desired alignment of the field (home plate to second base) is east-northeast . At the college/professional level, baseball is played in nine innings where each team gets one turn to bat and tries to score runs while
11607-489: Is the use of a pitch clock , which some leagues use to speed up the game's pace of play . The rule was first implemented in college baseball in 2010 , and added to certain levels of Minor League Baseball in 2015. The clock was introduced to Major League Baseball starting in the 2023 Major League Baseball season , establishing a 15 second time limit between pitches with the bases empty, and 20 seconds with at least one baserunner, as well as an automatic ball for violations of
11826-474: Is thrown out at first. A batter, particularly one who is a fast runner, may also attempt to bunt for a hit. A sacrifice bunt employed with a runner on third base, aimed at bringing that runner home, is known as a squeeze play . With a runner on third and fewer than two outs, a batter may instead concentrate on hitting a fly ball that, even if it is caught, will be deep enough to allow the runner to tag up and score—a successful batter, in this case, gets credit for
12045-401: Is thrown. South Korea's KBO League is expected to introduce a similar restriction in 2025. The ultimate goal of the team at bat is to score runs. To accomplish this task, the team at bat successively (in a predetermined order called a lineup or batting order ) sends its nine players to the batter's box (adjacent to home plate) where they become batters. (Each team sets its batting lineup at
12264-403: Is to receive any pitches that the batter does not hit and to "call" the game by a series of hand movements which signal to the pitcher what pitch to throw and where. The catcher also usually signals the desired location of the ball within the strike zone and "sets up" behind the plate or holds his glove up in the desired location as a target. The catcher's role becomes more crucial depending on how
12483-411: Is typically demarcated by a raised fence, which may be of any material and height. The fair territory between home plate and the outfield boundary is baseball's field of play, though significant events can take place in foul territory, as well. There are three basic tools of baseball: the ball , the bat , and the glove or mitt : Protective helmets are also standard equipment for all batters. At
12702-419: The first baseman , second baseman , shortstop , and third baseman . Originally the first, second and third basemen played very near their respective bases, and the shortstop generally played "in" (hence the term), covering the area between second, third, and the pitchers box, or wherever the game situation required. As the game evolved, the fielding positions changed to the now-familiar "umbrella", with
12921-552: The American League , which evolved from the minor Western League , was established in 1893, and virtually all of the modern baseball rules were in place by then. The National Agreement of 1903 formalized relations both between the two major leagues and between them and the National Association of Professional Base Ball Leagues, representing most of the country's minor professional leagues . The World Series , pitting
13140-592: The Atlanta Braves and the Chicago Cubs . When all eight participants for 1881 returned for 1882—the first off-season without turnover in membership—the "circuit" consisted of a zig-zag line connecting the eight cities: Chicago , Detroit , Cleveland , Buffalo , Troy (near the state capital of Albany, New York ), Worcester ( Massachusetts ), Boston , and Providence . In 1883, new New York and Philadelphia clubs began National League play. Both teams remain in
13359-629: The Great Depression , have led the sport to receive the moniker of "America's Pastime"; since the late 19th century, it has been unofficially recognized as the national sport of the United States , though in modern times is considered less popular than other sports , such as American football . In addition to North America , baseball spread throughout the rest of the Americas and the Asia–Pacific in
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#173284913327413578-714: The Houston Astros three years later. In 1969, the league added the San Diego Padres and the Montreal Expos (now the Washington Nationals ), becoming a 12-team league for the first time since 1899. In 1969, as a result of its expansion to 12 teams, the National League—which for its first 93 years had competed equally in a single grouping—was reorganized into two divisions of six teams (respectively named
13797-683: The Japanese Baseball League (1936) and its modern-day successor Nippon Professional Baseball (1950). Already-existing leagues in the Western Hemisphere were integrated into MLB's minor leagues and thus subject to the OBR, namely the Cuban League (1947) and the Mexican League (1955). In 1961, the 162-game schedule was adopted by MLB. In 1969, the pitcher's mound dropped five inches and
14016-487: The National Association of Base Ball Players , was formed. In 1867, it barred participation by African Americans . The more formally structured National League was founded in 1876. Professional Negro leagues formed, but quickly folded. In 1887, softball , under the name of indoor baseball or indoor-outdoor, was invented as a winter version of the parent game. The National League's first successful counterpart,
14235-556: The National Collegiate Athletic Association (NCAA), aside from governing the games of that organization's members, is also used by several other competitions involving college-aged players. The rules of the National Federation of State High School Associations (NFHS) hold sway over U.S. high school and high school-age baseball, governing and shaping the sport at this level . Unlike many other sports,
14454-727: The National League East and West , although geographically it was more like North and South), with the division champions meeting in the National League Championship Series (an additional round of postseason competition) for the right to advance to the World Series. In 1993 the league expanded to 14 teams, adding the Colorado Rockies and the Florida Marlins (which became the Miami Marlins shortly after
14673-464: The New York Knickerbockers club. In 1857, under the National Association of Base Ball Players (NABBP) Rules which governed until 1870, the 9- inning format was adopted, replacing the previous rule that the first team to score 21 runs won. The next year, called strikes were recognized, and a batter was out if a ball, fair or foul, was caught on the fly or after one bounce. Called balls and
14892-567: The St. Louis Cardinals ), along with three other teams that did not survive into the 20th century—the Baltimore Orioles (not the current MLB team), Louisville Colonels , and Washington Statesmen . While four teams that moved from the AA remain in the NL today (Pittsburgh [1887], Cincinnati [1890], Los Angeles [originally Brooklyn; 1890], and St. Louis [1892]), only two original NL franchises (1876) remain in
15111-544: The Summer Olympics , Baseball World Cup , and WBSC Premier 12 , first published its own official rule set in 2023; the WBSC had previously relied on a modified set of the OBR. WBSC rules are largely similar to the OBR, with minor differences including pitch clock timing and extra-innings tiebreakers. These rules do not apply to the World Baseball Classic , which is organized jointly by the WBSC and MLB. The baseball rulebook of
15330-478: The United States and Canada . Many amateur and youth leagues use the OBR with only a few modifications for safety, including Little League , PONY League , and Cal Ripken League . Most professional leagues outside North America (such as Japan's Nippon Professional Baseball ) also use modified versions of the OBR, though these generally have more pronounced differences. The World Baseball Softball Confederation (WBSC), which governs international tournaments like
15549-570: The White Stockings or later Phillies . The first game in National League history was played on April 22, 1876, at Philadelphia 's Jefferson Street Grounds , at 25th & Jefferson Streets, between the Philadelphia Athletics and the Boston baseball club. Boston won the game 6–5. The new league's authority was soon tested after the first season. The Athletic and Mutual clubs fell behind in
15768-456: The World Baseball Softball Confederation (WBSC). Women's baseball is played on an organized amateur basis in numerous countries. After being admitted to the Olympics as a medal sport beginning with the 1992 Games , baseball was dropped from the 2012 Summer Olympic Games at the 2005 International Olympic Committee meeting . It remained part of the 2008 Games . While the sport's lack of
15987-412: The outfield leader, and left- and right-fielders often cede to his direction when fielding fly balls . Of all outfielders, the left fielder often has the weakest arm, as they generally do not need to throw the ball as far in order to prevent the advance of any baserunners. The left fielder still requires good fielding and catching skills, and typically receives more balls than the right fielder due to
16206-510: The pitch clock to shorten game time. Baseball evolved from older bat-and-ball games already being played in England by the mid-18th century. This game was brought by immigrants to North America, where the modern version developed . Baseball's American origins, as well as its reputation as a source of escapism during troubled points in American history such as the American Civil War and
16425-411: The pitcher throws the ball towards home plate while a batter is standing in the batter's box (either right or left). With each pitch, the batter must decide whether to swing the bat at the ball in an attempt to hit it. The pitches arrive quickly, so the decision to swing must be made in less than a tenth of a second, based on whether the ball is hittable and in the strike zone , a region defined by
16644-429: The pitcher , throws a ball that a player on the batting team , called the batter , tries to hit with a bat . The objective of the offensive team (batting team) is to hit the ball into the field of play, away from the other team's players, allowing its players to run the bases , having them advance counter-clockwise around four bases to score what are called " runs ". The objective of the defensive team (referred to as
16863-410: The slider . Pitchers have different repertoires of pitches they are skillful at throwing. Conventionally, before each pitch, the catcher signals the pitcher what type of pitch to throw, as well as its general vertical or horizontal location. If there is disagreement on the selection, the pitcher may shake off the sign and the catcher will call for a different pitch. With a runner on base and taking
17082-423: The wicket for an hour or much more. There is no statistical equivalent in cricket for the fielding error and thus less emphasis on personal responsibility in this area of play. Unlike those of most sports, baseball playing fields can vary significantly in size and shape. While the dimensions of the infield are specifically regulated, the only constraint on outfield size and shape for professional teams, following
17301-473: The "National Association"), the NL is sometimes called the Senior Circuit , in contrast to MLB's other league, the American League , which was founded 25 years later and is called the "Junior Circuit". Both leagues currently have 15 teams. The National League survived competition from various other professional baseball leagues during the late 19th century. Most did not last for more than a few seasons, with
17520-468: The "fastball/change-up" combination: The average major-league pitcher can throw a fastball around 90 miles per hour (140 km/h), and a few pitchers have even exceeded 100 miles per hour (160 km/h). The change-up is thrown somewhere between 75 and 85 miles per hour (121 and 137 km/h). Since the batter's timing is critical to hitting a pitch, a batter swinging to hit what looks like a fastball, would be terribly fooled (swing and miss, hopefully) when
17739-424: The 154 game schedule was adopted. In 1893, the pitching position was changed from behind a line 50 feet from home plate to contact with a rubber slab 60.5 feet away. In 1894, foul bunts were made strikes, and the infield fly rule was adopted with one out. In 1895, foul tips were made strikes, but not foul balls. In 1898, the first modern balk rule was adopted, as well as the rule for recognizing stolen bases. In 1901,
17958-474: The 1920s, it was joined by the Eastern Colored League . Compared with the present, professional baseball in the early 20th century was lower-scoring, and pitchers were more dominant. This so-called " dead-ball era " ended in the early 1920s with several changes in rule and circumstance that were advantageous to hitters. Strict new regulations governed the ball's size, shape and composition, along with
18177-677: The 19th and 20th centuries, and is now considered the most popular sport in parts of Central and South America , the Caribbean , and East Asia , particularly in Japan , South Korea , and Taiwan . In Major League Baseball (MLB), the highest level of professional baseball in the United States and Canada, teams are divided into the National League (NL) and American League (AL), each with three divisions: East, West, and Central. The MLB champion
18396-530: The AA disbanded and merged with the NL, which became known legally for the next decade as the "National League and American Association". The teams now known as the Cincinnati Reds , Los Angeles Dodgers (originally Brooklyn) and Pittsburgh Pirates (as well as the now-defunct Cleveland Spiders ) had already switched from the AA to the NL prior to 1892. With the merger, the NL absorbed the St. Louis Browns (now known as
18615-454: The AL and joined the eight NL teams in forming a new National League; the 12th team would be whichever of the remaining five AL teams loyal to Johnson first chose to join; if none did so an expansion team would have been placed in Detroit , by far the largest one-team city at that time. Four days later, on November 12, both sides met (without Johnson) and agreed to restore the two leagues and replace
18834-514: The All-Star Game, or in the World Series. Beginning in 1997, however, interleague games have been played during the regular season and count in the standings. Prior to the early 2020s – before the universal designated hitter rule was started in both leagues – as part of the agreement instituting interleague play, the DH rule was used only in games where the American League team was the home team. In 1999,
19053-577: The American League, the Cardinals have won the most World Series (11) followed by the Giants and Dodgers (8), Pirates (5), and Reds (5). St. Louis also holds the distinction of being the only AA club to defeat an NL club in the 19th-century version of the World Series, having done so against their now-division rival Cubs. The eight charter teams were the following: The eight-team lineup established in 1900 remained unchanged through 1952. All franchises are still in
19272-454: The Central had one more team). A third postseason round was added at the same time: the three division champions plus a wild card team (the team with the best record among those finishing in second place) now advance to the preliminary National League Division Series . Due to a players' strike, however, the postseason was not actually held in 1994. Before the 1998 season, the American League and
19491-400: The DH rule, including MLB, Japan's Pacific League , and Caribbean professional leagues, along with major American amateur organizations. The Central League in Japan does not have the rule and high-level minor league clubs connected to National League teams are not required to field a DH. In leagues that apply the designated hitter rule, a typical team has nine offensive regulars (including
19710-681: The DH), five starting pitchers, seven or eight relievers, a backup catcher, and two or three other reserve players. The manager , or head coach, oversees the team's major strategic decisions, such as establishing the starting rotation, setting the lineup, or batting order, before each game, and making substitutions during games—in particular, bringing in relief pitchers. Managers are typically assisted by two or more coaches ; they may have specialized responsibilities, such as working with players on hitting, fielding, pitching, or strength and conditioning. At most levels of organized play, two coaches are stationed on
19929-459: The Dodgers. Latin-American players, largely overlooked before, also started entering the majors in greater numbers. In 1951, two Chicago White Sox, Venezuelan-born Chico Carrasquel and black Cuban-born Minnie Miñoso , became the first Hispanic All-Stars . Integration proceeded slowly: by 1953, only six of the 16 major league teams had a black player on the roster. In 1975, the union's power—and players' salaries—began to increase greatly when
20148-629: The Gotham Club. While there are reports that the New York Knickerbockers played games in 1845, the contest long recognized as the first officially recorded baseball game in U.S. history took place on June 19, 1846, in Hoboken, New Jersey : the "New York Nine" defeated the Knickerbockers, 23–1, in four innings. With the Knickerbocker code as the basis, the rules of modern baseball continued to evolve over
20367-643: The NL today, the Phillies in their original city and the New York franchise (later named Giants) now in San Francisco since 1958. The NL encountered its first strong rival organization when the American Association began play in 1882. The AA played in cities where the NL did not have teams, offered Sunday games and alcoholic beverages in locales where permitted, and sold cheaper tickets everywhere (25 cents versus
20586-452: The NL's standard 50 cents, a hefty sum for many in 1882). The NL struck back by establishing new clubs in 1883 in AA cities Philadelphia (later called "Phillies") and New York (the team that would become the Giants). The National League and the American Association participated in a version of the World Series seven times during their ten-year coexistence. These contests were less organized than
20805-509: The NL. By 1903, the upstart AL had placed new teams in the National League cities of Boston , Chicago, New York, Philadelphia , and St. Louis , as well as the "abandoned" NL cities Cleveland and Washington (and, temporarily, Baltimore). Only the Cincinnati Reds and Pittsburgh Pirates had no AL team in their markets. The AL among other things enforced a strict conduct policy among its players. The National League at first refused to recognize
21024-481: The National League each added a fifteenth team. Because of the odd number of teams, only seven games could possibly be scheduled in each league on any given day. Thus, one team in each league would have to be idle on any given day. This would have made it difficult for scheduling, in terms of travel days and the need to end the season before October. In order for MLB officials to continue primarily intraleague play, both leagues would need to carry an even number of teams, so
21243-590: The National League were the Union Association and the Players' League . The Union Association was established in 1884 and folded after playing only one season, its league champion St. Louis Maroons joining the NL. The Players' League was established in 1890 by the Brotherhood of Professional Base-Ball Players, the sport's first players' union, which had failed to persuade the NL to modify its labor practices, including
21462-494: The Official Baseball Rules (OBR) published by Major League Baseball (MLB), though various minor variations exist from league to league; the World Baseball Softball Confederation maintains its own official rule set for international competition. There are several major codified sets of rules, which differ only slightly. The Official Baseball Rules, published by Major League Baseball , govern all professional play in
21681-418: The Official Baseball Rules have remained mainly static during the modern era of the game. Many baseball players, fans and administrators view the rules and traditions of professional baseball as time-tested and nearly sacrosanct. This was not the case during baseball's early days, particularly in the late 19th century, when rules were changed significantly and often yearly. The modern game began to take shape in
21900-513: The United States and Canada was founded in 1878 in Cuba, which maintains a rich baseball tradition. The Dominican Republic held its first islandwide championship tournament in 1912. Professional baseball tournaments and leagues began to form in other countries between the world wars, including the Netherlands (formed in 1922), Australia (1934), Japan (1936), Mexico (1937), and Puerto Rico (1938). The Japanese major leagues have long been considered
22119-669: The United States. While baseball is widely played in Canada and many minor league teams have been based in the country, the American major leagues did not include a Canadian club until 1969, when the Montreal Expos joined the National League as an expansion team. In 1977, the expansion Toronto Blue Jays joined the American League. In 1847, American soldiers played what may have been the first baseball game in Mexico at Parque Los Berros in Xalapa , Veracruz . The first formal baseball league outside of
22338-589: The West Coast of the U.S. for the first time. The NL remained an eight-team league for over 60 years. (For the eight teams, see Expansion (1887–1899) above, and "Classic Eight" below.) In 1962—facing competition from the proposed Continental League and confronted by the American League 's unilateral expansion in 1961—the NL expanded by adding the New York Mets and the Houston Colt .45s. The "Colts" were renamed
22557-411: The area directly above home plate and between the hollow beneath the batter's knee and the midpoint between the top of the shoulders and the top of the uniform pants. In addition to swinging at the ball, a batter who wishes to put the ball in play may hold his bat over home plate and attempt to tap a pitch lightly; this is called a bunt . Good bunting technique has been described as "catching the ball with
22776-486: The average major league game has increased steadily through the years. At the turn of the 20th century, games typically took an hour and a half to play. In the 1920s, they averaged just less than two hours, which eventually ballooned to 2:38 in 1960. By 1997, the average American League game lasted 2:57 (National League games were about 10 minutes shorter—pitchers at the plate making for quicker outs than designated hitters). In 2004, Major League Baseball declared that its goal
22995-410: The ball and reaches first base before an opponent retrieves the ball and touches the base, or when the pitcher persists in throwing the ball out of the batter's reach . Players on the batting team who reach first base without being called " out " can attempt to advance to subsequent bases as a runner, either immediately or during teammates' turns batting. The fielding team tries to prevent runs by using
23214-442: The ball to get batters or runners "out", which forces them out of the field of play. The pitcher can get the batter out by throwing three pitches which result in strikes , while fielders can get the batter out by catching a batted ball before it touches the ground, and can get a runner out by tagging them with the ball while the runner is not touching a base. The opposing teams switch back and forth between batting and fielding;
23433-428: The ball toward home plate with the goal of getting the batter out . Pitchers also play defense by fielding batted balls, covering bases (for a potential tag out or force out on an approaching runner), or backing up throws. The catcher's main role is to receive the pitch if the batter does not hit it. Together with the pitcher and coaches, the catcher plots game strategy by suggesting different pitches and by shifting
23652-414: The ball very well and usually wears a specially designed mitt . The first baseman fields balls hit near first base. The first baseman also has to receive throws from the pitcher in order to tag runners out who have reached base safely. The position is less physically challenging than the other positions, but there is still a lot of skill involved. Infielders do not always make good throws to first base, so it
23871-413: The baseball in a certain manner, and by throwing it at a certain speed, pitchers can cause the baseball to break to either side, or downward, as it approaches the batter, thus creating differing pitches that can be selected. Among the resulting wide variety of pitches that may be thrown, the four basic types are the fastball , the changeup (or off-speed pitch), and two breaking balls —the curveball and
24090-558: The baserunners from scoring. There are nine defensive positions, but only two have a mandatory location (pitcher and catcher). The locations of the other seven fielders are not specified by the rules, except that at the moment the pitch is delivered, they must be positioned in fair territory and not in the space between the pitcher and the catcher. These fielders often shift their positioning in response to specific batters or game situations, and they may exchange positions with one another at any time. The nine positions most commonly used (with
24309-406: The bat." On any pitch, if the batter swings at the ball and misses, he is charged with a strike . If the batter does not swing, the home plate umpire judges whether the ball passed through the strike zone. If any part of the ball passed through the zone, it is ruled a strike; otherwise, it is called a ball . The number of balls and strikes thrown to the current batter is known as the count ;
24528-454: The batter the previous inning are erased. A runner may circle the bases only once per plate appearance and thus can score at most a single run per batting turn. Once a player has completed a plate appearance, that player may not bat again until the eight other members of the player's team have all taken their turn at bat in the batting order . The batting order is set before the game begins, and may not be altered except for substitutions . Once
24747-407: The batter, standing in either of the two batter's boxes next to home plate, holding a bat. The batter waits for the pitcher to throw a pitch (the ball) toward home plate, and attempts to hit the ball with the bat. The catcher catches pitches that the batter does not hit—as a result of either electing not to swing or failing to connect—and returns them to the pitcher. A batter who hits the ball into
24966-413: The batting team out . The winner is the team with the most runs after nine innings. If the home team is ahead after the top of the ninth, play does not continue into the bottom half. When this happens, an X is put on the scoreboard for the home team's score in the ninth inning. In the case of a tie, additional innings are played until one team comes out ahead at the end of an inning. If the home team takes
25185-464: The batting team's turn to bat is over once the fielding team records three outs. One turn batting for each team constitutes an inning . A game is usually composed of nine innings, and the team with the greater number of runs at the end of the game wins. Most games end after the ninth inning, but if scores are tied at that point, extra innings are usually played. Baseball has no game clock, though some competitions feature pace-of-play regulations such as
25404-418: The beginning of each half-inning, the nine players of the fielding team arrange themselves around the field. One of them, the pitcher , stands on the pitcher's mound. The pitcher begins the pitching delivery with one foot on the rubber, pushing off it to gain velocity when throwing toward home plate. Another fielding team player, the catcher , squats on the far side of home plate, facing the pitcher. The rest of
25623-439: The beginning of the game. Changes to the lineup are tightly limited by the rules of baseball and must be communicated to the umpires, who have the substitutions announced for the opposing team and fans. See Substitutions below.) A batter's turn at the plate is called a plate appearance . Batters can advance to first base safely in one of seven methods: a base-hit (abbreviated 'H') or walk ('BB' for base-on-balls) are by far
25842-603: The behavior of teammates that he quit playing in 1891 to become one of America's most famous evangelical Christian preachers. Most fans appear to have felt the same way, because attendance at games was plummeting by 1900. After eight seasons as a 12-team league, the NL contracted back to eight teams for the 1900 season, eliminating its teams in Baltimore , Cleveland , Louisville (which has never had another major league team since), and Washington . This provided an opportunity for competition. Three of those cities received franchises in
26061-413: The bounce and for succeeding or failing. The statistical precision of baseball is both facilitated by this isolation and reinforces it. Cricket is more similar to baseball than many other team sports in this regard: while the individual focus in cricket is mitigated by the importance of the batting partnership and the practicalities of tandem running, it is enhanced by the fact that a batsman may occupy
26280-426: The catcher stands the home plate umpire. The batter stands in one of the batter's boxes and tries to hit the ball with a bat. The pitcher must keep one foot in contact with the top or front of the pitcher's rubber—a 24 by 6 inches (610 mm × 150 mm) plate located atop the pitcher's mound—during the entire pitch, so he can take only one step backward and one forward in delivering the ball. The catcher's job
26499-402: The clock. The rule does not exist in other top-level leagues, such as Japan's Nippon Professional Baseball (NPB), where there exists some resistance to its adoption. South Korea's KBO League said in 2023 that it would implement a pitch clock "at the earliest possible date." Only the pitcher's and catcher's locations are fixed, and then only at the beginning of each pitch. Thus, the players on
26718-412: The count is always given balls first, then strikes (such as 3–2 or "three and two", also known as a "full count", which would be 3 balls and 2 strikes). If the batter swings and makes contact with the ball, but does not put it in play in fair territory—a foul ball —he is charged with an additional strike if there are less than two. Thus, a foul ball with two strikes leaves the count unchanged. (However,
26937-424: The count, it is considered a counted third strike and an out; if not initially caught by the catcher, it remains a foul ball with two strikes. Baseball Baseball is a bat-and-ball sport played between two teams of nine players each, taking turns batting and fielding . The game occurs over the course of several plays , with each play generally beginning when a player on the fielding team , called
27156-630: The course of a single game each team will frequently use from two to five pitchers. In the 2005 ALCS , all four of the Chicago White Sox victories were complete games by the starters, a highly noteworthy event in the modern game. While delivering the ball, the pitcher has a great arsenal at his disposal in the variation of location, velocity, movement, and arm position (see types of pitches ). Most pitchers attempt to master two or three types of pitches; some pitchers throw up to six types of pitches with varying degrees of control. Common pitches include
27375-742: The decision was made to move one club from the AL Central to the NL Central. Eventually, Milwaukee agreed (after Kansas City declined) to change leagues; the National League now had 16 teams, the American League 14 with the switch. Beginning with the 2013 season, the Houston Astros moved from the National League Central to the American League West, which now gave both leagues three divisions of five teams each. Often characterized as being
27594-430: The delivery of a fastball, but arrives at a significant lower velocity due to the pitcher holding the baseball with the middle and ring fingers slightly apart; a circle changeup , which is held in the palm of the hand with the index finger curled around the side of the baseball, allowing the pitcher to mimic the delivery of a fastball, but arrives at a significantly lower velocity. To illustrate pitching strategy, consider
27813-473: The difference between a double and a triple or inside-the-park home run . The surface of the field is also unregulated. While the adjacent image shows a traditional field surfacing arrangement (and the one used by virtually all MLB teams with naturally surfaced fields), teams are free to decide what areas will be grassed or bare. Some fields—including several in MLB—use artificial turf . Surface variations can have
28032-428: The dropped bat touches the ball, it is considered a dead ball. Depending on the way the ball comes off the bat, the play has different names. A batted ball is called a fly ball if it is hit in the air in an upward arc, such that a fielder might be able to catch it before it hits the ground. A batted ball is called a ground ball if it hits the ground within the infield before it can be caught, often due to being hit in
28251-613: The early 1830s, there were reports of a variety of uncodified bat-and-ball games recognizable as early forms of baseball being played around North America. The first officially recorded baseball game in North America was played in Beachville, Ontario , Canada, on June 4, 1838. In 1845, Alexander Cartwright , a member of New York City's Knickerbocker Club , led the codification of the so-called Knickerbocker Rules , which in turn were based on rules developed in 1837 by William R. Wheaton of
28470-418: The effect of shortening 2023 regular season games by 24 minutes on average. Although baseball is a team sport, individual players are often placed under scrutiny and pressure. While rewarding, it has sometimes been described as "ruthless" due to the pressure on the individual player. In 1915, a baseball instructional manual pointed out that every single pitch, of which there are often more than two hundred in
28689-585: The end of the 2011 season). In 1998, the Arizona Diamondbacks became the league's fifteenth franchise, and the Milwaukee Brewers moved from the AL to the NL, giving the NL 16 teams for the next 15 seasons. In 1994, the league was again reorganized, into three geographical divisions (East, West and Central , all currently with five teams; from 1994 to 1997 the West had one fewer team, and from 1998 to 2012,
28908-399: The fact that right-handed hitters, who are much more common, tend to "pull" the ball into left field. Each outfielder runs to "back up" a nearby outfielder who attempts to field a ball hit near both their positions. Outfielders also run to back up infielders on batted balls and thrown balls, including pick-off attempts from the pitcher or from the catcher . Effective pitching is critical to
29127-448: The field move around as needed to defend against scoring a run. Many variations of this are possible, as location depends upon the situation. Circumstances such as the number of outs, the count (balls and strikes) on the batter, the number and speed of runners, the ability of the fielders, the ability of the pitcher, the type of pitch thrown, the tendencies of the hitter, and the inning cause the fielders to move to more strategic locations on
29346-488: The field of play must drop the bat and begin running toward first base, at which point the player is referred to as a runner (or, until the play is over, a batter-runner ). A batter-runner who reaches first base without being put out is said to be safe and is on base. A batter-runner may choose to remain at first base or attempt to advance to second base or even beyond—however far the player believes can be reached safely. A player who reaches base despite proper play by
29565-476: The field to confer with players during a game. Any baseball game involves one or more umpires , who make rulings on the outcome of each play. At a minimum, one umpire will stand behind the catcher, to have a good view of the strike zone, and call balls and strikes. Additional umpires may be stationed near the other bases, thus making it easier to judge plays such as attempted force outs and tag outs. In MLB, four umpires are used for each game, one near each base. In
29784-467: The field when the team is at bat: the first base coach and third base coach, who occupy designated coaches' boxes, just outside the foul lines. These coaches assist in the direction of baserunners, when the ball is in play, and relay tactical signals from the manager to batters and runners, during pauses in play. In contrast to many other team sports, baseball managers and coaches generally wear their team's uniforms; coaches must be in uniform to be allowed on
30003-410: The field, returning to their team's dugout or bench. A runner may be stranded on base when a third out is recorded against another player on the team. Stranded runners do not benefit the team in its next turn at bat as every half-inning begins with the bases empty. An individual player's turn batting or plate appearance is complete when the player reaches base, hits a home run, makes an out, or hits
30222-444: The field. Common defensive strategies include: playing for the bunt, trying to prevent a stolen base , moving to a shallow position to throw out a runner at home, playing at " double play depth", and moving fielders to locations where hitters are most likely to hit the ball. Infield shifts were restricted by the OBR starting in 2023, which mandated that two infielders must be positioned on either side of second base before each pitch
30441-408: The fielders has recorded a hit . A player who reaches first base safely on a hit is credited with a single . If a player makes it to second base safely as a direct result of a hit, it is a double ; third base, a triple . If the ball is hit in the air within the foul lines over the entire outfield (and outfield fence, if there is one), or if the batter-runner otherwise safely circles all the bases, it
30660-417: The fielding team faces home plate, typically arranged as four infielders—who set up along or within a few yards outside the imaginary lines (basepaths) between first, second, and third base—and three outfielders. In the standard arrangement , there is a first baseman positioned several steps to the left of first base, a second baseman to the right of second base, a shortstop to the left of second base, and
30879-406: The fielding team) is to prevent batters from becoming runners , and to prevent runners advancing around the bases . A run is scored when a runner legally advances around the bases in order and touches home plate (the place where the player started as a batter). The initial objective of the batting team is to have a player reach first base safely ; this generally occurs either when the batter hits
31098-687: The first British baseball champions winning the 1890 National League of Baseball of Great Britain . The 2020 National Champions were the London Mets . Other European countries have seen professional leagues; the most successful, other than the Dutch league , is the Italian league , founded in 1948. In 2004, Australia won a surprise silver medal at the Olympic Games . The Confédération Européene de Baseball (European Baseball Confederation), founded in 1953, organizes
31317-409: The first and third baseman generally positioned a short distance toward second base from their bases, the second baseman to the right side of second base standing further away from the base than any other infielder, and the shortstop playing to the left of second base, as seen from the batter's perspective. The first baseman 's job consists largely of making plays at first base on ground balls hit to
31536-604: The first modern farm system . A new Negro National League was organized in 1933; four years later, it was joined by the Negro American League . The first elections to the National Baseball Hall of Fame took place in 1936. In 1939, Little League Baseball was founded in Pennsylvania. Many minor league teams disbanded when World War II led to a player shortage. Chicago Cubs owner Philip K. Wrigley led
31755-552: The five later in New York City on February 2, 1876, the National League of Professional Base Ball Clubs was established with eight charter members, as follows: The National League's formation meant the end of the old National Association after only five seasons, as its remaining clubs shut down or reverted to amateur or minor league status. The only strong club from 1875 excluded in 1876 was a second one in Philadelphia, often called
31974-581: The formation of the All-American Girls Professional Baseball League to help keep the game in the public eye. The first crack in the unwritten agreement barring blacks from white-controlled professional ball occurred in 1945: Jackie Robinson was signed by the National League's Brooklyn Dodgers and began playing for their minor league team in Montreal . In 1947, Robinson broke the major leagues' color barrier when he debuted with
32193-400: The foul lines is referred to as fair territory; the 270-degree area outside them is foul territory. The part of the field enclosed by the bases and several yards beyond them is the infield ; the area farther beyond the infield is the outfield . In the middle of the infield is a raised pitcher's mound, with a rectangular rubber plate (the rubber) at its center. The outer boundary of the outfield
32412-450: The foul strike rule. In 1907, the sacrifice fly rule was adopted. In 1910, cork centers were added to balls. In 1925, the minimum distance for a home run was made 250 feet. Until 1929 (AL) and 1931 (NL), a ball that bounced over the outfield fence in fair territory was a home run, not a ground rule double. After that, the rules remained virtually static for decades. Most top-level international leagues were formed during this period, including
32631-400: The fourth "base", they form a square with sides of 90 feet (27.4 m) called the diamond. Home plate is a pentagonal rubber slab 17 inches (43 cm) wide. The playing field is divided into three main sections: The pitcher's mound is located in the center of the infield. It is an 18-foot (5.5 m) diameter mound of dirt no higher than 10 inches (25 cm). Near the center of the mound
32850-400: The game is going, and how the pitcher responds to a given situation. Each pitch begins a new play , which might consist of nothing more than the pitch itself. Each half-inning, the goal of the defending team is to get three members of the other team out. A player who is out must leave the field and wait for his next turn at bat . There are many ways to get batters and baserunners out; some of
33069-596: The game's most direct antecedents are the English games of stoolball and "tut-ball". The earliest known reference to baseball is in a 1744 British publication, A Little Pretty Pocket-Book , by John Newbery . Block discovered that the first recorded game of "Bass-Ball" took place in 1749 in Surrey , and featured the Prince of Wales as a player. This early form of the game was apparently brought to Canada by English immigrants. By
33288-490: The height of fences or other structures at the edge of the outfield. The most famously idiosyncratic outfield boundary is the left-field wall at Boston's Fenway Park , in use since 1912: the Green Monster is 310 feet (94 m) from home plate down the line and 37 feet (11 m) tall. Similarly, there are no regulations at all concerning the dimensions of foul territory. Thus a foul fly ball may be entirely out of play in
33507-481: The high school level and in doubleheaders in college, Minor League Baseball and, since the 2020 season , Major League Baseball ; and six innings at the Little League level). One team—customarily the visiting team—bats in the top, or first half, of every inning. The other team—customarily the home team—bats in the bottom, or second half, of every inning. The goal of the game is to score more points ( runs ) than
33726-821: The highest quality professional circuits outside of the United States. After World War II, professional leagues were founded in many Latin American countries, most prominently Venezuela (1946) and the Dominican Republic (1955). Since the early 1970s, the annual Caribbean Series has matched the championship clubs from the four leading Latin American winter leagues: the Dominican Professional Baseball League , Mexican Pacific League , Puerto Rican Professional Baseball League , and Venezuelan Professional Baseball League . In Asia, South Korea (1982), Taiwan (1990) and China (2003) all have professional leagues. The English football club, Aston Villa , were
33945-426: The importance of the game. There are three bases . Numbered counterclockwise , first, second, and third bases are cushions (sometimes informally referred to as bags ) shaped as 18 inches (46 cm) square in Major League Baseball, or 15 inches (38 cm) in other rulesets (including Little League, Babe Ruth, American Legion, and NFHS) which are raised a short distance above the ground. Together with home plate ,
34164-647: The ineffective National Commission with a one-man Commissioner in the person of federal Judge Kenesaw Mountain Landis . The National League circuit remained unchanged from 1900 through 1952. In 1953 the Braves moved from Boston to Milwaukee ; in 1966 they moved again, to Atlanta . In 1958 the Brooklyn Dodgers and the New York Giants moved to Los Angeles and San Francisco, respectively, bringing major league baseball to
34383-404: The infield fly rule was extended to apply when there were no outs. Due to the frequent and often radical rule changes during this early period, the "modern era" is generally considered to have begun in 1901, when the American League was also formed. Some significant rule changes continued in the first quarter of the 20th century, but were much less frequent. In 1903, the American League adopted
34602-413: The infield so that the outfielder does not have to throw the entire distance if they have been forced to field the ball near the outer edge of the outfield. The shortstop fills the critical gap between second and third bases—where right-handed batters generally hit ground balls—and also covers second or third base and the near part of left field . This player is also a cut-off for the outfield. This position
34821-410: The infielders may play in , moving closer to home plate to improve the odds of throwing out the runner on a ground ball , though a sharply hit grounder is more likely to carry through a drawn-in infield. Several basic offensive tactics come into play with a runner on first base, including the fundamental choice of whether to attempt a steal of second base. The hit and run is sometimes employed, with
35040-399: The institution of interleague play, little remains to differentiate between the two leagues. By 2011, MLB had changed its policy on interleague play, deciding to schedule interleague games throughout the season rather than only during specially designated periods. This policy would allow each league to have 15 teams, with one team in each league playing an interleague game on any given day. As
35259-500: The introduction of regular season interleague play in 1997, the difference in play between the two major leagues has diminished considerably. The NL's adoption of the designated hitter rule in 2022 , and the expansion of interleague play to 46 games beginning in 2023 , has further blurred the lines between leagues. Though both leagues agreed to be jointly governed by a commissioner in 1920, they remained separate legal and business entities with their own president and management. This
35478-433: The late 1880s, with additional significant rule changes made during the rest of that century. Many of the modern rules of baseball originated with the so-called "New York game" played by amateur urban clubs of the 1840s and 1850s. These rules were first published in 1848 by Alexander Cartwright , often credited as "the father of baseball", though they were actually written by William R. Wheaton and William H. Tucker , of
35697-407: The lead anytime during the bottom of the ninth or of any inning after that, play stops and the home team is declared the winner; this is known as a walk-off. The basic contest is always between the pitcher for the fielding team and a batter . The pitcher throws pitches the ball towards home plate, where the catcher for the fielding team waits (in a crouched stance) to receive it. Behind
35916-473: The league) and the then sports world, but made it clear to clubs that league scheduling commitments, a cornerstone of competitive integrity, were not to be ignored. The National League operated with only six clubs during 1877 and 1878. Over the next several years, various teams joined and left the struggling league. By 1880, six of the eight charter members had folded. The two remaining original NL franchises, Boston and Chicago, remain still in operation today as
36135-536: The league: the Chicago Cubs and the Atlanta Braves (originally in Boston, and later Milwaukee). The Cubs are the only charter member to play continuously in the same city. The other two pre-1892 teams still in the league are the Philadelphia Phillies and the San Francisco Giants (originally New York), both of which joined in 1883. The National League became a 12-team circuit with monopoly status for
36354-413: The leagues to develop slightly different strategies and styles of play. The National League was long considered the more "traditional" league, a reputation most exemplified by the NL's more prevalent use of " smallball " tactics and lack of a designated hitter rule, which the AL implemented in 1973. However, with the advent of free agency in the 1970s allowing for more player movement between leagues, and
36573-439: The manager of the batting team trying to arrange opposite-handed matchups. With a team that has the lead in the late innings, a manager may remove a starting position player—especially one whose turn at bat is not likely to come up again—for a more skillful fielder (known as a defensive substitution ). The tactical decision that precedes almost every play in a baseball game involves pitch selection. By gripping and then releasing
36792-407: The midpoint between the batter's shoulders and belt down to the hollow of the knee. Any pitch which does not pass through the strike zone is called a ball, unless the batter either swings and misses at the pitch, or hits the pitch into foul territory; an exception generally occurs if the ball is hit into foul territory when the batter already has two strikes, in which case neither a ball nor a strike
37011-484: The modern Series, lasting as few as three games and as many as fifteen, with two Series (1885 and 1890) ending in disputed ties. The NL won four times and the AA only once, in 1886. Starting with the Pittsburgh Pirates in 1887, the National League began to raid the American Association for franchises to replace NL teams that folded. This undercut the stability of the AA. Other new leagues that rose to compete with
37230-425: The most common are catching a batted ball in the air , tag outs , force outs , and strikeouts . After the fielding team has put out three players, that half of the inning is over and the team in the field and the team at bat switch places; there is no upper limit to the number that may bat in rotation before three outs are recorded. Going through the entire order in an inning is referred to as "batting around" and it
37449-417: The most common; being hit-by-the-pitch ('HBP'), reaching by error ('E') or fielder's choice ('FC') are less common; and somewhat rarely a player may reach base by virtue of interference ('I') or a passed ball ('PB') on a strikeout , where the player is allowed to run and reach base safely if able. When the batter hits a fair ball, he must run to first base and may continue or stop at any base unless he
37668-466: The new league, but reality set in as talent and money was split between the two leagues, diluting the league and decreasing financial success. After two years of bitter contention, a new version of the National Agreement was signed in 1903. This meant formal acceptance of each league by the other as an equal partner in major-league baseball, mutual respect of player contracts, and an agreement to play
37887-419: The newly christened American League (AL) when the minor Western League changed its name to the AL in 1900, with the approval of the NL, which regarded the AL as a lesser league since they were a party to the National Agreement. The AL declined to renew its National Agreement membership when it expired the next year, and on January 28, 1901, the AL officially declared itself a second major league in competition with
38106-503: The next half-century. The game then went on to spread throughout the Pacific Rim and the Americas, with Americans backing the sport as a way to spread American values. In the mid-1850s, a baseball craze hit the New York metropolitan area , and by 1856, local journals were referring to baseball as the "national pastime" or "national game". A year later, the sport's first governing body,
38325-423: The nickname for third base as the "hot corner". Also, because there are far more right-handed hitters than lefties, there are more ground balls hit to the left side of the infield due to the natural motion of the batter's swing. The three outfielders, left fielder , center fielder , and right fielder , are so named from the catcher 's perspective looking out onto the field. The right fielder generally has
38544-436: The number scorekeepers use) are: pitcher (1), catcher (2), first baseman (3), second baseman (4), third baseman (5), shortstop (6), left fielder (7), center fielder (8), and right fielder (9). Note that, in rare cases, teams may use dramatically differing schemes, such as switching an outfielder for an infielder. The numbering convention was established by Henry Chadwick . The reason the shortstop seems out of order has to do with
38763-494: The offices of American League and National League presidents were discontinued and all authority was vested in the Commissioner's office. The leagues subsequently appointed "honorary" presidents to carry out ceremonial roles such as the awarding of league championship trophies. Additionally, the distinction between AL and NL umpires was erased, and instead all umpires were unified under MLB control. Following these actions, as well as
38982-436: The other infielders . When an infielder picks up a ball from the ground hit by the batter , he must throw it to the first baseman who has to catch the ball and maintain contact with the base before the batter gets to it for the batter to be out. The need to do this quickly often requires the first baseman to stretch one of his legs to touch first base while catching the ball simultaneously. The first baseman must be able to catch
39201-478: The other discipline notably benefits from its unique mix of elements. The most exceptional park in this regard is Coors Field , home of the Colorado Rockies . Its high altitude—5,282 feet (1,610 m) above sea level—is partly responsible for giving it the strongest hitter's park effect in the major leagues due to the low air pressure. Wrigley Field , home of the Chicago Cubs, is known for its fickle disposition:
39420-435: The other pitches and defends in the field. High school baseball plays seven innings and Little League uses six-inning games. An inning is broken up into two halves where the away team bats in the top (first) half, and the home team bats in the bottom (second) half. In baseball, the defense always has the ball which differentiates it from most other team sports. The teams switch every time the defending team gets three players of
39639-558: The other team. The players on the team at bat attempt to score runs by touching all four bases, in order, set at the corners of the square-shaped baseball diamond . A player bats at home plate and must attempt to safely reach a base before proceeding, counterclockwise , from first base, to second base, third base, and back home to score a run. The team in the field attempts to prevent runs from scoring by recording outs , which remove opposing players from offensive action until their next turn at bat comes up again. When three outs are recorded,
39858-465: The park. National League (baseball) The National League of Professional Baseball Clubs , known simply as the National League ( NL ), is the older of two leagues constituting Major League Baseball (MLB) in the United States and Canada , and the world's oldest extant professional team sports league. Founded on February 2, 1876, to replace the National Association of Professional Base Ball Players (NAPBBP) of 1871–1875 (often called simply
40077-426: The pitch turns out to be a much slower change-up. Some pitchers choose to throw using the ' submarine style ,' a very efficient sidearm or near-underhand motion. Pitchers with a submarine delivery are often very difficult to hit because of the angle and movement of the ball once released. Walter Johnson , who threw one of the fastest fastballs in the history of the game, threw sidearm (though not submarine) rather than
40296-461: The pitcher—in the batting order, but does not field. Thus, even with the DH, each team still has a batting order of nine players and a fielding arrangement of nine players. The number of players on a baseball roster, or squad , varies by league and by the level of organized play. A Major League Baseball (MLB) team has a roster of 26 players with specific roles. A typical roster features the following players: Most baseball leagues worldwide have
40515-694: The plans for a professional league for the sport of baseball with a stronger central authority and exclusive territories in larger cities only. Additionally, Hulbert had a problem: five of his star players were threatened with expulsion from the NAPBBP because Hulbert had signed them to his club using what were considered questionable means. Hulbert had a great vested interest in creating his own league, and after recruiting St. Louis privately, four western clubs met in Louisville, Kentucky , in January 1876. With Hulbert speaking for
40734-412: The play began, as or after the ball is caught). Runners may also attempt to advance to the next base while the pitcher is in the process of delivering the ball to home plate; a successful effort is a stolen base . A pitch that is not hit into the field of play is called either a strike or a ball. A batter against whom three strikes are recorded strikes out . A batter against whom four balls are recorded
40953-447: The playoffs, six umpires are used: one at each base and two in the outfield along the foul lines. Many of the pre-game and in-game strategic decisions in baseball revolve around a fundamental fact: in general, right-handed batters tend to be more successful against left-handed pitchers and, to an even greater degree, left-handed batters tend to be more successful against right-handed pitchers. A manager with several left-handed batters in
41172-427: The position of the index finger and middle finger being "split" on the baseball; a slider , which is made to curve laterally by rotation imparted by the pitcher; a knuckleball , which is held either by the knuckles closest to the nails or by the nails themselves letting the pitcher throw a baseball with little or no spin on the ball allowing the baseball to move in any direction; a Vulcan changeup , which seeks to mimic
41391-404: The possibility of a draw (which occurs because of the restrictions on time, which like in baseball, originally did not exist ) often encourages a team that is batting last and well behind, to bat defensively and run out the clock, giving up any faint chance at a win, to avoid an overall loss. While nine innings has been the standard since the beginning of professional baseball, the duration of
41610-456: The preceding decade's average of 3:18. In 2016, the average nine-inning playoff game in Major League baseball was 3 hours and 35 minutes. This was up 10 minutes from 2015 and 21 minutes from 2014. In response to the lengthening of the game, MLB decided from the 2023 season onward to institute a pitch clock rule to penalize batters and pitchers who take too much time between pitches; this had
41829-452: The presence of the pitcher in the NL batting order. As the collective bargaining agreement came closer to expiring after the 2021 season, owners expressed their intentions to use the designated hitter in all games starting in 2022. In response to the COVID-19 pandemic in 2020, rule changes were instituted in both leagues for the 2020 season , which included an abbreviated 60-game schedule,
42048-463: The regular lineup, who knows the team will be facing a left-handed starting pitcher, may respond by starting one or more of the right-handed backups on the team's roster. During the late innings of a game, as relief pitchers and pinch hitters are brought in, the opposing managers will often go back and forth trying to create favorable matchups with their substitutions. The manager of the fielding team trying to arrange same-handed pitcher-batter matchups and
42267-472: The reserve clause was effectively struck down , leading to the free agency system . Significant work stoppages occurred in 1981 and 1994 , the latter forcing the cancellation of the World Series for the first time in 90 years. Attendance had been growing steadily since the mid-1970s and in 1994, before the stoppage, the majors were setting their all-time record for per-game attendance. After play resumed in 1995, non-division-winning wild card teams became
42486-402: The rest of the decade. The league became embroiled in numerous internal conflicts, not the least of which was a plan supported by some owners (and bitterly opposed by others) to form a "trust", wherein there would be one common ownership of all twelve teams. The NL used its monopsony power to force a $ 2,400 ($ 85,000 today) limit on annual player wages in 1894. As the 20th century dawned, the NL
42705-413: The rubric of MLB. In 2001, Barry Bonds established the current record of 73 home runs in a single season. There had long been suspicions that the dramatic increase in power hitting was fueled in large part by the abuse of illegal steroids (as well as by the dilution of pitching talent due to expansion), but the issue only began attracting significant media attention in 2002 and there was no penalty for
42924-399: The rule was changed to allow shoulder-high deliveries. Until 1887, batters could call for either a high or low pitch, and the strike zone was either above or below the waist. In 1885, the rules changed, to allow bats to be flat on one side; beginning in 1893, they had to be round. In 1887, the rules changed so that batters could no longer call for a pitch; and the strike zone was defined as from
43143-401: The rules do not limit the number of pitchers that can be used in a game; the only limiting factor is the size of the squad, naturally. In general, starting pitchers are not used in relief situations except sometimes during the post-season when every game is vital. If a game runs into many extra innings, a team may well empty its bullpen . If it then becomes necessary to use a "position player" as
43362-560: The rules of MLB and Minor League Baseball , is that fields built or remodeled since June 1, 1958, must have a minimum distance of 325 feet (99 m) from home plate to the fences in left and right field and 400 feet (122 m) to center. Major league teams often skirt even this rule. For example, at Minute Maid Park , which became the home of the Houston Astros in 2000, the Crawford Boxes in left field are only 315 feet (96 m) from home plate. There are no rules at all that address
43581-449: The runner is touched by the ball, held in a fielder's hand, while not on a base. (The batter-runner is always forced to advance to first base, and any other runners must advance to the next base if a teammate is forced to advance to their base.) It is possible to record two outs in the course of the same play. This is called a double play . Three outs in one play, a triple play , is possible, though rare. Players put out or retired must leave
43800-493: The shoulders to the knees. During this period, the pitcher's mound was much closer to home plate, foul balls were not counted as strikes, batters got four strikes, and the number of "called balls" resulting in a walk—which initially included strikes and foul balls- went from 9 to 8 to 7 to 6 to 5 and, in 1889, to 4. In that same year, the number of strikes went from 4 to 3. In 1887, a rule was adopted for that year counting only walks as hits, which played havoc with statistics. In 1892,
44019-399: The standings and refused to make western road trips late in the season, preferring to play games against local non-league competition to recoup some of their financial losses rather than travel extensively incurring more costs. Hulbert reacted to the clubs' defiance by expelling them, an act which not only shocked baseball followers (New York and Philadelphia were the two most populous cities in
44238-486: The stands of the South End Grounds started a fire. The blaze quickly got out of hand and swept through downtown Boston, destroying or damaging 100 buildings. Team owners argued with each other, and players hated the NL's $ 2,400 salary cap. Many teams also ran into trouble with city governments that forbade recreational activities on Sunday . Billy Sunday , a prominent outfielder in the 1880s, became so disgusted with
44457-429: The starting positions of the other fielders. Catchers are also responsible for defense in the area near home plate (such as dropped third strikes and wild pitches ) or baserunning plays, most commonly when an opposing player attempts to steal a base . Due to the exceptional difficulty of the position, catchers are universally valued for their defensive prowess as opposed to their ability to hit. The four infielders are
44676-426: The strike zone was reduced from the armpits to the top of the knees. In 1973, the American League adopted the designated hitter rule. This was probably the most controversial rule change in baseball's history and is still subject to lively debate. It was not adopted by the National League until 2022. Also controversial when adopted was the later introduction of interleague play . On the other hand, rule changes banning
44895-405: The strongest arm of all the outfielders due to the need to make throws on runners attempting to take third base . The center fielder has more territory to cover than the corner outfielders , so this player must be quick and agile with a strong arm to throw balls into the infield ; as with the shortstop , teams tend to emphasize defense at this position. Also, the center fielder is considered
45114-406: The teams switch roles for the next half-inning. If the score of the game is tied after nine innings, extra innings are played to resolve the contest. Many amateur games, particularly unorganized ones, involve different numbers of players and innings. The game is played on a field whose primary boundaries, the foul lines, extend forward from home plate at 45-degree angles. The 90-degree area within
45333-531: The two major league champions against each other, was inaugurated that fall. The Black Sox Scandal of the 1919 World Series led to the formation of the office of the Commissioner of Baseball . The first commissioner, Kenesaw Mountain Landis , was elected in 1920. That year also saw the founding of the Negro National League ; the first significant Negro league, it would operate until 1931. For part of
45552-505: The use of performance-enhancing drugs before 2004. In 2007, Bonds became MLB's all-time home run leader, surpassing Hank Aaron , as total major league and minor league attendance both reached all-time highs. Despite having been called "America's national pastime", baseball is well-established in several other countries. As early as 1877, a professional league, the International Association , featured teams from both Canada and
45771-468: The use of steroids and other performance-enhancing substances have had widespread support as protecting the integrity of the game. The most recent significant rule changes to the OBR occurred in 2023, when MLB Commissioner Rob Manfred introduced rules adding a pitch clock , extra-inning base runners, and restricting infield shifts . These rules have been gradually adopted in North America (and in WBSC competition), but generally do not exist elsewhere in
45990-417: The use of the designated hitter in all games, and expanded rosters. The National League reverted to its old batting rules during the 2021 season , but starting with the 2022 season , they permanently adopted the designated hitter rule after a new CBA was ratified. For the first 96 years of its coexistence with the American League, National League teams faced their AL counterparts only in exhibition games,
46209-443: The walk were introduced in 1863. In 1867, the batter had the right to call for a high or low pitch, to be determined by the umpire. The National League formed in 1876. Its rules changed almost yearly for the next quarter century. In 1880, a batter was out if the catcher caught the third strike; otherwise, the batter got four strikes. Before 1883, pitchers were required to deliver pitches with their hand below their hips; in that year,
46428-497: The way fielders positioned themselves in the early years of the game; the shortstop was positioned in the shallow outfield. Each position is weighted on the defensive spectrum in terms of difficulty. The most difficult position is the catcher, while the least difficult is first base. Designated hitter, while on the scale, is not part of the defense at all. Pitchers, while part of the active defense, are so specialized in their role that they usually make only routine plays. The battery
46647-400: The world. Baseball is played between two teams with nine players in the field from the team not batting at that point (the batting team would have one batter in play at "home plate" on the field). On a baseball field , the game is under the authority of several umpires. There are usually four umpires in major league games; up to six (and as few as one) may officiate depending on the league and
46866-494: The world. Baseball was played at the Olympic Games from 1992 to 2008, and was reinstated on a one-off basis in 2020. A baseball game is played between two teams, each usually composed of nine players, that take turns playing offense (batting and baserunning) and defense (pitching and fielding). A pair of turns, one at bat and one in the field, by each team constitutes an inning . A game consists of nine innings (seven innings at
47085-529: Was an average game of 2:45. By 2014, though, the average MLB game took over three hours to complete. The lengthening of games is attributed to longer breaks between half-innings for television commercials, increased offense, more pitching changes, and a slower pace of play, with pitchers taking more time between each delivery, and batters stepping out of the box more frequently. Other leagues have experienced similar issues. In 2008, Nippon Professional Baseball took steps aimed at shortening games by 12 minutes from
47304-402: Was disputed by some, such as former Detroit Tigers manager Jim Leyland , who claimed that the American League is more difficult because AL managers are required to know exactly when to pull a pitcher, whereas an NL manager merely pulls his pitcher when that spot comes up in the batting order. Overall, there were fewer home runs and runs scored in the National League than in the American, due to
47523-469: Was in trouble. Conduct among players was poor, and fistfights were a common sight at games. In addition to fighting each other, they fought with the umpires and often filled the air at games with foul language and obscenities. A game between the Orioles and Boston Beaneaters (a precursor to today's Atlanta Braves) in 1894 ended up having tragic consequences when players became engaged in a brawl and several boys in
47742-572: Was suffering from a lack of strong authority over clubs, unsupervised scheduling, unstable membership of cities, dominance by one team (the Boston Red Stockings ), and an extremely low entry fee ($ 10) that gave clubs no incentive to abide by league rules when it was inconvenient to them. William A. Hulbert (1832–1882), a Chicago businessman and an officer of the Chicago White Stockings of 1870–1889, approached several NA clubs with
47961-437: Was the case until after the 1999 season, when the National League legally merged with the American League under the auspices of Major League Baseball, which now operates much like other North American professional sports leagues, albeit with two "leagues" instead of "conferences". By 1875, the National Association of Professional Ball Players (NAPBBP, often referred to as the "National Association"), founded four years earlier,
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